Type-writing machine.



No. 826,482. PATBNTED'JULY 17, 1996. G. W. DONNIHG.

TYPE WRITING MACHINE.

APPLICATION runs say-122.1901.

6 SHEETS-BREE! 1.

No. 826,482. PATENTED JULY 1?, 1906.

- G. W. DUEKIEG.

TYPE WRITING MAGHINE.

APPLIUAIIOH E'H-ED SEPT. 93, 1901.

8 SHEETS-SHEET 2.

No. 826,482. PATBNTED JULY 1?, 1905. G. w. Bowman TYPE WRITING MAUHINB.

i i, V

Wnyasws z 0 "I IATENTED JULY 17, 1906.

G. W. DONNING. TYPE WRITING MAGHINE. ,urmenron rum) 8EPT.33.1901.

ENTOR Qua-77 W 1 TNESSES 7/77 may.

No. 826,482. ynzmnn JULY 17, 1906. a. w. nonmm TYPE WRITING ma ma APPLICATION FILED 832 1. 23, 1991 6 SHBETS BHBBT 5.

IL/l

PATENTED JULY 17, 1906.

INVENTOR B SHEETS-SHEET 6 G. W. DONNING. TYPE WRITING MACHINE.

AYPLIOATIBR SILED SEPT 28 1901 WITNESSES.- fifi' ment thereof consists in the combination;

thickness between the lawn sides.

-mova.ble longitudinally,

UN lll E l) H'lATliLS GEOlll-ll l W. llUX XlNii. ()l EAST GRANGE. NEW .ll llilllil", ilh'Sil-Ix'illi PATENT OFFn llAllllY 'l". AHBRQSE, U1 filizllflnll l, NEW ERSEY.

TYPE-WFHTlNG MAci-unr-i,

Application film! September T0 mm wlwm. it may (mum/ u;

Be it known thnl l, (lnmmn lV. Duxmxu, a citizen of the United Staten, residing at East. Orange, in the unnniy nf Essex nnrl State of New Jbt'sc), have invented cisrlnin new nml useful linpi'm'vnn-nt's in Typ WI'iting Machines; and i do hereby declare the following to in a. lull, (,ltill', nml exact l0- scriptiun of the im'nntinn. such as will bumbleothers skilled in the in't in which it nppt'rtains to make and use the samo.

This ilwention has. rvfsronvu primarily to table-tops for siistiiining largo bucks such as banks Qf record, lmlgils {llCllOIEfi-YlQS, and. the like and particularly to that class of type-writing machines in which a downwardacting writing mechanism is nised in connec tion with n platen t0 sustain the leaf of a book having in bud supported and movablebelnw and inclepcndunlly 01' tin platen. -The invention is susceptible of many a 1i pliant-ions and embmliincnts. One oinhgrlk with the platen, which stands normally at rest, of a lwul-suppurt arranged tn he UNIX-Til l i gfi vertically-yiahling lGzM'QS or bani-(ls Minn ii to underlie. and support the twn sides uf the r book, so that one side 0!. the. nther ()f the bunk may be brought in posit-ion to permit a. leaf tn at will beneath the platen and cmnpi be turned over ands-imported npunfili 33in. while being rinted upon lay timing; writing-machine, and this regardless of thathickness of the book and of the variation in As stated, the platen may stand normally at rest'antl the can-i9. e and its basket may be llll'lllllllfil at a. fixe hei htandlhe hook-support he transversely; in otherwise. The platen may likewise be at a. fixed height, as in the case of film lmsknb and its carriage. The wlmln rlsvice may, if desired, all be placed in one thlile. This book-sup orb may also be used fer supporting the p Men or platens to be used in can; junction therewith and may extmulithe entire length and breadth therenffsn that a metal 0 li hpweight or thinness may be emp10 ed an yet the platgan be fully snpport ed an be prevented fromsagging; thus main- Speeificasinn of Letters Patent.

Patented July 132', l 906. 23.1901. Berinllln. 75.:is9.

l sound arising Tum inipncl. 0f the l p? nnnn tlw platen. lnthn event that nhonnil lmnk is used the len vvs and cover thereof i'i'slingi unclcr the plain-l: man he nn'iint-nim-il clnsvli' 'undqr the platen, this aiding in deadening: the sound, or whvi'n lunar slivviis aw llhlfl tliv supports may lie held up against tlw lmmis. in the same nnnnm and prevent lllllhO.

Referring. t0 the drawings, .l igurv l, is 21 view inp'erspui-ivn, showing my sliding top. the lmcl -snppnfting nwchnnisin, and n lJUUli thereon in connection with the )lnl v-n. Fig". is a View in vertical seulion lengtlnv se 0i tho hook, Fig. 3 is a view in transverse n ticnl soclinn wiih lzlw various parts in tlwii: opm'ntiyn pnsitiuns. Fig. l is n sllliilll" amp lion gl'ggngh illh:'lAUUlVSUPPC IL alone. illuslrnning th change in the rclntinn of its two sideslfn mnnmrminle: fur the vnrinilnn in he a) 5', Fig. 7. Fig. 6 is n view in ilKl elevation ih'ernf. lig. T n view in plain. a 77" {detail views Fig. ll) iei'speei ve oi the inngii'inliimll'i' l nannven'sly n o *alwln linuh suppinjt. llnl'erring tn the Llfflil1lf,' A if fl n -ins =1. jn-ble 01' bed in sustain the Lypv-wriling meliiiii'fiin; platen, and ih lacmk-suppml, hereinafter 11101-0 part innlin'ly lltSC-l'll mil. 'llntnljl nmy he nonstructvd xvii-h its snilan-r: of

lliili (81* other sniinhln farm: lint it is ynvlcr n'bly conitrnctml with n longitudinal ilvpivnsion or channel :1 in receive and guide a hooli- "sup'mrting de ivo B, prvsvntly in be de fifilll)(l. ltis in he nmlerst-wd ilml; [he inpressionnr c-hzn'nwl a 11in run lvngtlnvisv of the t-ahl if desired. tn permit. tin )0 li';lliJ- port- B tdlxi'mevml lnngilxnilinnlly, in ill???) may he a. supplemental in15? maxnfil h'ilfl'gl tudinally, s n ti moved Han (1 its sin-porting ine- 7 mental base may nmve. tinnsvnrsely and the E {11' in this figure, which may ha regal-(ind is being 111 some degree (lHigTillH- lmulznnppnil; longitudinally, 3S slwwn in' (lium he mnveii longitudinally. or the snppl formed on the under sides of the longitudinal members of the sup ileiuental frame. I) represci'its pin ions meshing with racks I)" and carricrl by shaft b, and b is a pawl carried by lover b for operating pinions b. The relation of tl1es(- .st1'uctures to the underlying idea of my invention will bemorereadil a parent from the following consideration t 1e other figures.

In the channel or depression a of the table is a frame B,'adapted to move freely therein and referably flat and rec-ta ular in shape, t ough it is to be understoo that it may be of any construction and shape, the pointbeingto have a base movable at will, as presently to be described, and capable of carrying mechanism for supporting a book to be written upon. To strengthen the frame, I may, if desired, have a rose the-central portion thereof a brace on cam b. At the sides of the frame B preferably at the four ends and at the center, are rollers or small wheels b", preferably fla ed, which bear, referably, upon tracks I), yin along the si es of the channel a and secure to the table, or the tracks may be dispensed with and the rollers run on the depressed part of the table, as shown in Figs. 1 and 2. If desired, suitable stops. or cushion devices may be located at the ends of the depression, against which the firame may strike, and these may be adjustable, if desired; It is to. he understood, however, that these rollers or Wheels 11 may be located at any other a proriate portion of the device, as in. the ower Face of the frame B, or, if desired, in the floor of the channel, so that the frame may roll upon the same. Likewise the same could be 1011 rollers or balils countersunk in thafloo'r of t e channel, as is obvious, the important consideration being to alfiordmeans by which the frame may freely and quickly move in the channel at- The parts. just described constitute what 1'. designate a slidingto table. With this I may employ what term my adjustable book-rest, the same forming generall an essential adjunct to my slidi -top tab e. The referred arrangement 0 this book-rest is illustrated in Figs. 3, 4, 5, 6,7, 8, and 9. In the two front corners oii fmame B- are located upright plates I and in the rear corners s' a1: plates I. Fivoted near the up per ends of plates I are upwardly and in- Wardly extending arms '1', '8. Similar arms i 71 are ivoted' near the upper ends of rear lates I and a second pair ofupwardly and inwardly extending arms 21 i are ivotarlly mounted near-the lo vver ends oft ese rear plates. Theinner ends of arms it are pivoted to short standards 1'. i, depending from the forward portions of book-supporting leaves J J whlle the inner ends of arrhs 11%" i i are pivotall secured at long standards i 41, depending om the rear portions oi the leaves. It will be understood that the arms are so constructed and mounted as to be parallel at all times, whereby uniform vertical movement of the book-sup orting leaves is insured. The arms may, 1' desired, be of suflicient resiliency to give a sprin y yielding efiect to take up jar and noise. .n order to insure synchronous movement of arms t i at each end of the book-support and to'prevent any tendency of the leaves to cant and stick, I ma connect such pairs of arms b rods 1*", rigid y secured thereto and exten ing from front to back of frame B Pivotally connecting the standards if, so as to ada t leaves J J to move in opposite vertical directions, is a rocking plate K of any requisite form. This. plate is provided at its ends with slots '1'), which receive the pivot-pins i, proi'ectin-g from standards 11, and thus ermit t e necessary pla between the stan ards and the plate. referably there is but one of these rockin plates to, connect the rear standards 1' Mt e back, it not hei essential to connect the front stand;- ard's in. t 's manner, though it is tabeunderstood that I may do. so, if required. Nor mally this rocking plate is in a horizontal position, the arms '0' t and parallel arms 11 i t 11* inclining upward from their pivotal: point in the corner-plates I, thus holding the standards i-n movable vertical suspension.

Each vertical yielding leaf J J". works in harmony with the other through the of the rocking plate K and adjusts itself pro erly to position the parts as the leaves of t book are turned from one side to the'other. It is obvious that as one side of the book he'- comes heavier theyielding leaf on thatside will become depressed, and this in turndepresses its sustaining parts. At the some time the opposite side will rise automatically to the same extent to which the other-is de ressed. If the leaves of each side of the book are about evenly distributed, the-weight on each leaf will be nearly equal, and it may then become necessary for the operator to adjust the device by hand to bring thebook leaves close tothe laten. These movements are ct course-in M'InOHy with-theother parts of the device. By havingthe arts at thefront of the work-support of less d pth than the rear 1? am able to-employ a. lower-ta;-

IIO

ble frame, since when one or other of the leaves is depressed the front standard; arms '1 i never drop below the-front filameof the table, though the rear standards and the supportinghrms t i may. this: 811 rangemen-t the parts of thedevice will! not contact with the body oi the openatonamdi the writing mechanism may thus be mounted. lower than would: otherwise be. sibl'e i a eilitatihg'easy manipulation of t e parts:

I may desire to provide meanslceatfif preferably, centrally of the rockinp plate by vvlili'ohv to effect certainandregu mont of tho standards. A preferred form is that illusn-nu-d in Fig. 5, consisting of plates L, one of which is supported on a bracket 1, attached to the rectangular skeleton frame B. There are preferably two of these pistes L, suitably shaped and connected at their. lower portion, as bf! bolts Z, passing through perforations Z. 1658 plates L are provided centrally with a vertical slot 1, in whieh slides a pin Z. Interposed between these plates and extending, preferebly froni the top line thercof'nearly two-thirds of their length are preferably two earn-plates M, one edge m of each of which is straight, while the other edge m is rounded and provided with teeth m, which are designed to mesh with similar teeth n in two pinions N, located, preferably, below the cam-plates, and which are carried by a s indie n, extendin through the plates L on the pmions N on to the rent of the device, the pro,eoting end being rovided with a smell wheel e, against ivlnc may, if desired, heel-.8 friction-clutch knob n.- The spindle may be provided at the points where the inions N with col ors n yortion of the cam lates M is e perforation in which fits the sli mg pin 1' i to. Between the two cam-plates M is interposed the rocking plate K, which at itseen tral portion is provided with a perforation through which passes the slid in P, em:

" ried'h the cam-plates M and sli in 'i'n the I slots in the side plates L, as heretdloie'described. The peculiar shape and disposition of the two cam-plates M and the pinions Nj efi'eet a; locking of the parts at an ointto which they may be returned, as wi l e readily understood. 7 V i I may, if desired utilize the derice illustrated in Fi 3 for looking the parts in position when a. justed to maintain the leaves in' a desired ad uStment. This device may or may not be used in connection with the means for efi'ecti thiselreardy described. The eonstmotiono such locking devieemay be as followszltlhehnbs'or collars i*"'of the rms '5, encircling rods *5, rnei'lie-jirovidod on their under surfeeewith oiitwaird-faoing sdlratchebserrations i l, engaged by pawls' i, as spring pawls, and ghirigers i may he ro vided for disengaging the ponds. it wi l he obvious that by this arrangement either well will opergteito prevent the degression o the It is to e on erstood that I-donot wish to be to the use of teeth in' the hubor V caller-end oi a pawl working therein; as other mvnlent forms of devioema be utilized 6010' subserveo like function, so ssa'deviee lar; and to be drawn into therewith in any preferred manner, as by r thumb-screws or by levers, &o. By the arrangem'ent here set forth a very important "it passes'through the lates L and betilifiil Inthe upper shove referred consisting of a. band passin around thejcel ictioniil Contact" result is ell'eoted 'nsinoly, in having the book-summit cit able of being determinately adjusted with re etion to the platen, and this luau-lion is effected through the medium of the eamlstes, pinions, and looking ltlltl fother moo ienisms sd'unctive thereto.

The operation of tlliis mechanism will he obvious. When a hook is placed 11 on the hook-rest, the leaves [I J thereof will generally he at the highest point or even with the under side oi the platen. The com-plates M, resting in oontect with the pinions N, upon being moved, the pin Z, carrying the rocking plate K, is forced to the top of the slot Z in the plntesli, as shown in Fig. 4. Where the yielding leaves J J are not in, horizontal alinement, they are preferably brought into this position, The-platen being raised, the open hook is laid on the hook-support, one cover on each of the supporting'lenves, and the plslilteiijs swung d own into position we: one sides? the book. if the hookhe sothick ssfto necessitate s foreihle de ression of the underlying half of the hook y the platen, the lmhdwheel it? may he turned to rotate the'pinions N to cause the csin plotes M to torn iii'theproper direction These in turn cause the gin? to lowenond with it the rocking plate K. This imparts a downward inotlon to the leaves J J and their supporting mechanism. At the point where the platen "may rest upon thefront "lOllllOI; of the table or upon astandard provi ed therein the turning of the handwheel n is ceased. By reap son of their-oonstruction, disposition, and op oration the carmpletes and pinions are pralc- 'tioally self-locking to hold theoperts this adjusted position as long as desired. It will be understood, of eourse, that the weight of r r the book-supyortihlleeves and the superimr1 15 posed book are so oient to keep the camplates at 'nllitimes in engagement with theirmeshing pinions. If a smaller'book is then tohe written in, the hand-wheel n should be rotated in the opposite direction to cause the I m lesresre be raised until the hook presses under' the "platen; operation of the book 'srr rgrrt, it may e observed, rocking' p'lete' serves, by reason of th'cam plates and pinions, as a vertically'sdjustsble 1 x 5 szipport for the rising and fallm V hook-supportingleoves, while the parelle arms 'i 'i i may; heiregerded as means for guiding the lensresin theirrisin andfailing-moreznents, or si nee'the vertioa. adjustment of plate B no st once eommunicated through standards '2'! eo'seid' ersllel arms the plate end-arms may to at er he regarded as constituting a. vertiee yshdusteble support'for theiesres, ,whiohfnre 't emselres eepehle of vertical I? rziovement. A feature of this eonstruction lie that when the arts are once adjusted for e 'partieulsr size 0 hook it remains in this adjustment until it becomes necessary to change it-fora different size of book. The rso construction, disposition, and operation of the rocking late K adjust the mechanism for various t icknesses of half of the book as leaves are turned in the progress of the work. There is here, therefore, an automatically-adjusting table. It is to be understood that the rocking plate K and its adjusting mechanism may be omitted and yet the table will accomplish the desired results, but necessarily to a more limited extent, since it would not accommodate books of extra thickness. To facilitate the o eration of the parts when the book has een placed upon the book-rest and it is desired to regulate the position of the leaves carrying the book-covers, the wheel n on the rod n is turned in the proper position, which causes the double pinion N to rotate to move the double cam-plate M, which operation raises or lowers the standard i and its leaf J or J, as the case may be, as alread described. When the desired adjustment as been effected, the clutch-knob n on the end of the rod u may be utilized to lock the parts until occasion re uires a chan e of plane of the leaves J an J for a di 'erent size of book than that just used. Said clutch-knob n is mounted on the screw-threaded end of a spindle n, which asses longitudinally through the rod 1; and is provided at its other end with a disk n, bearin against the outside of the rear late L. t is obvious that the rod n may e clamped in place by rotating the clutch-knob in. the proper direction.

However, the frictional engagement of the cam-plates M and the pinions N may ordinarily be de ended upon to retain the bookrest at the esired height. It is preferable to dispose of the parts for supporting the leaves J and J 2 toward their rear. Otherwise they .would strike the back of the book when in certain positions, and this dis osition also economizes space. The paralle arms su porting the standards tend to distribute t e weight evenly, so that the rocking plate and cam-plates.bear little or no more strain than the leaves in 1perfect horien they are zontal plane an particularly w being adjusted The device ust described is What I term an adjustable book-rest to facilitate the vertical adjustment of the leaves J and J 'to to rise or fall, but keeping it constantl in its. Y

brin B y gmone oithe other to a desired plane. t same I produce a parallel-motion device, permitting the book-rest as a whole horizontal position. It isto be un ersood that any equivalent construction and arrangement of parts which will permit 1'! rise and fall p ay be utilized (such as that shown in my pending application, Serial No. 64,890) and yet be w thin the spirit of my invention. E 4 The parts are made of such strength and are so adjusted that the leaves J J will carry taming large ooks-asuo side than on the other.

B reason of the vertical adjustability of the ook-sup ort B and of the longitudinal movement .its base-frame B the book in- Which the rinting is to be efi'ected may easily be shifte to the right or left in order to 80 brin one side or the other of the'book into the old of action of thewriting mechanism and then adjusted vertically to present-the writingsurface to a-proper plane for action; The book-support remains at rest during the Writing operation. It is, of course understood-that the. two leaves forming the.book'- restv may.be-capable of. rising an falling independently. and be maintained at alli-times in a horizontal or approximatelyhorizontal 9o positiona illhis leveling of the openh-ook and sliding qtthe book support arematters of decided advantage and convenience in the operation of the type-writer.

In devices heretofore employed and Where? in are used sprin s to kee the yielding leaves against the boo each eaf operates ndependently of the other, so that there is always dangerof the side of the book not. un, der the platen; being forcedabove the laten. Moreover, the springs cannot, ossibly e of a kind to act the same with a light bookas with a heavy one. In my device y havm a par;- allel. lIlOhiOD Of the leaves through t e medium of the rockingplate the top surfaces of the leaves are kept perfectly level'always and the Weight of the book makes no dlfiplence in the efiective working of the device. When once it has been ad'ustedfora particular book, it requires nol urtheradfustment for books of that particular kind. t'isto be undersood, of course, 'that this 'me'chanmm may be mounted upon the to of a {desk having the rectan l'ar frame depressed n a suitably-channe ed supplemental game or box. a The same would not-in thlSl--,'1} 1St&1lqfi necessarily be a permanent part; Q the desk or table. his to be understood; also that my sliding-to table rIIlB.

as booksof record,

ledgers, dictionaries, and l the ilikfl lffhllfl writingmechanisrn is not toi be. jern' oyed. Likew se equivalent devweskiorpe act ng movement and adjustment of the, parts may be utilizedwithout departing from the spir t ofmy invention. i 7 71 i; 2

D represents a la ten of metal preferably flat and'rigidmn hin edetoneend on a horizontal rodd, fixed instandardi k supports it, attached to the table, so that the be utilizm for; susnormalposition mound 0 upon the platen llw. platen These tracks support the writon" lines 1? litl the front aro released, the tracks platen may he turned upnn-nl to l'aoilitntol tho:uljnslnwnt olho hook thoroundo'r and I then turmoil fl(l\\"ll\-ll'll on the unilorlving",

'riitl'o of the hook, so that the loaf to he prihto'l i horizontal positlm or nosition plifllit l with the underlying kill-Summit, it may he made sufficiently large to rest upon the front edge of tho inhlo. The platen may ho fixed in no oil ion hut wlwn hinged, on oitho roar, it per-- minthe hook and tho loaf to he more conveniently adjusted in relation thereto.

.1 n order to relieve t] w oporntor ol the labor ol lilting theplnton, whioh not hoof nlnrgo Sizv nnzl quite heavy, l propose to use it o:nuiti-rlmlnncing-s irin prol'rrnhly mode in the form shown at lfi, l in. 1 and 2, in which l it will ho soon that the spring has one onil oftoc-hnl lo the platen llllll the other to the Hill 1!. lliis wring exerts a. constant upward 'prl'assuro on the platen, and when made of sull'ioiont strength it will serve to lift the plntonand maintain it in on vlovated osition, as shown in Fig, 2, thus leaving the minis of Hui/operator free for the lnanipnlatioll of tho adjustment.

is shown in Fig 2, the platen may he provided ntglls lront wit h i'a'iozins for maintaining itin horizontal iosition against the action of tho airing of, the roar. This may he noooi'nplislied h any preferred form of catch d t l-king u ion o part of the lahle top. At the rear oi tho platen I may utilize the top strip of llw lohlo A for attaching moons, such as chimps, for holding nnniifohling material or the pa )or being written upon. I may also, if, riesiioil, cut away a portion of the top of tho tahlo at its ear and provido the edges thus produced with rollom ovor which man; pans paper or nuinil'olding material suitnhly so Yz-ndod under or adjacent to the table-top may also, ii" desired, locate there guides fol: keeping the no or straight when lending over to and upon tie platen, all as illustrated in my oopending application, Serial: No, HM-l2;

F dooignates thel.raol s,lving longituzlh Rally of the tnhle and parallel to the sides of the platen, Those 4H3) be connected toether at tho front and rear and be suitably 'nged at tho roar of the table, as onn rod extending from tmok to track. Al; the front I may provide :1 suit-able form of iotsiinii'ig device e lo llfllll the tracks down upon the tnhln, either a single one or a separate one for each the ok The. unitod Hooks ironntitu to a frame, which upon beinglloworod to its nmyhe utilized to holgl'theworlc ilown upon lug ninolinnlnn G, when this writing mechonism piwin tl hook hy the operator and the "from their ends.

to be brought in propnr position.

will lift on their hingvs hy tho weight of the machine, or a woiglil or othor in ict-inlay il v neoossorvor desired, ho oo'iployorl"for lilting the traolisii' r If cloil ed, the rear ends of tho trn-oks may oxtnd lnfli: beyond tho lino of the table and hrl pifovidizd with itlJlll'lllOlllH, the tracks; hcn'g'hiaiged Ol'ffllltflllllltffl n. suilnliln distance This will kXl'lBli the writingmechanism to be pushed look beyond the hinge or fulcrum point of the trucks, so that whom it is desired to raise tho tracks or frame up out of the way, the writing mechanism hoing at the extremities of the racks, hy merely releasing the retaining (lo ioo at the front the tracks or mono will, by reason of the weight of the writing mechanism thereon beyond their fulormn-point, he owned to lift. The raising 'il the some may, if desired,

he facilitated by providing springs or weights 7 in a, gifionio eli'ool: this result. Whon the writing inool anism is thus pushed hack to the end of the tracks, it leaves the tahlo free and open, so that the leaves of the hook, the platen, or other" work may he adjusted. Another important feature is that the tracks, (hereinafter desorihmL-J wliinh rrvl'omhly lie alongside of the edges of tho 1) uton and are independent thereof, do not have to ho rained whenever it ljfioomvs nvrvssnry to mine the platen or toiidjuit the leaves oi tho hook,

They are likewise so disposed ahove the plane of the hook-leave that when the hook is moved from one sido of the tnhlo to the other tlioy 'irill not inlorforo with the llOUhC It is to he understood, howvvoi', that lho tracks inofhe raised, upon lho pinion and serve to lioldtllo work thou-on and also to hold the ploten down in place.

The construction of tho writing monhnnism, the platen, &o., isaroiomhl tho some: as disolosod in niy penrling fipplifll filfjfig i riahlXofifiSlO.

iiiilli: operation of the nmc-liino herein losorihekl tlio trooks suppi'ntimf the writing meohanismnnd the platen are both turned upout of the way. A hook o onod at any desired oint or olosod is than nid upon the leaves 0 the traveling supiort and the sup ort shifted to the rightor oft, as require in order to permit the, leaf to be printed upon '"he laten is then turned down on the body of the'hook and the leaf to be written un s-n tome-(l ovoiupon the platonzniil the tracks; -.iwere(l to bring the writingmecluI-nism in iriqiorgios'i'tion. Although the springh} 1ml su'llioiont weight to lifttheplaten tii Flglifiif'the ovorlyii lg ho sofram when in-n? no upon the platen v may he utilizeilto lioep it down in operative Positionfl If'not I; may provide a suitnhle (inking devioe, as alroncly zloscrihoel. Tho

spring ma 7, however, he mmlo wmikvr, so

that'tlie pnton will he just heavy enough to rest liorizontolly,requiring little or no treme rigidity.

these reasons lifting power to raise the platen to an angle of forty-five degrees, more or less. When in this position, the wei ht is thrown u on the hinges at the rear of t e platen instead of being dis osed at the front end of the laten, thus faci itating raising of the platen y the operator. In -heu of springs I may employ weights suitably disposed to subscrve this function. When the writing on one page is completed, the machine on the tracks is moved back and the platen is lifted. Then the book-supporting frame is moved to the opposite side of the table and the platen is lowered, thus bringing the other side of the book beneath the platen, after which the other side of the leaf or the next leaf, as the case may be, is placed in position and the platen placed as before. It is not necessary, as before stated, to raise the tracks. The book-leaf may be held d own by clamps or other retaining mechanism, and these may also be employed where separate sheets of aper, cards, &c., are to be written upon. I hen the vertically-adjustable and laterally-movable book-support is used, a vertical adjustment of the laten and base-frame in relation to the tab e or other support is unnecessary. The platen, frame, and writing mechanism are preferably so disposed as to be relatively at fixed heights.

It is to be observed that by the employment of the device described it is rendered possible for the o orator to adjust a book of any size and weig t quickly and easily in the proper relation to the platen and the Writing mechanism. It is not necessary for the operator to lift the book after it is placed on the machine. As all the arts above the book can be turned 11 out o the way and are selfsup orting, bot hands may be used in the a justment of the book. When the platen is turned down, it has the effect of depressing the underlying side of the book to the required level. After the platen is thus adjusted the leaf to be printed upon may be turned over uponit, adjusted in position, and, if desired, secured by turning down the upper frame, or this may be accomplished by clam ing devices, as already described. It is to 0 observed that during all these 0 erati-ons the twohands of the operator are fre for the urpose of adjusting the book and that With out disturbing the book access ma be had instantly to any part of the page or correction or other purposes. It is to be observed also; that the arrangement shown does not neces: sitate any vertical adjustment of the arts supporting the Writing mechanism and p aten' andthat it does not require any provision for the lateral ad'ustment of these parts. For

I am enabled t9 construct the machine cheaply and to give the parts ex- I Itis to be understood that I may, if desired, w th the same elements constituting my shdmg-to'p table make the same caps, 1c of movement longitudinally instead of transversely bv changing the direction of the channel a in the table and the position of the rollers on the same. sired, merely by combining these two constructions provide a construction by which the same may be moved both transversely and longitudinally. A supplemental baselrame and channel might be provided to constitute the construction for the longitudinallymovable device and this to carry the trans vcrselyunovable device, as shown in Fig. 10, and, finally, 1 could have means i or effecting vertical adjustment of the table-top.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a book type-Writer, the combination with a suitable base, and the flat laten and track-rails, of rising and falling boo supporting leaves underlying the platen, and a su port member for said leaves supported by t e ase independently of the leaves and vertically adjustable to elevate or depress the leaves simultaneously.

2. In a book type-writer, the combination with the flat platen and track-rails, of rising and falling book-su porting leaves underlying the platen, and aterally-adjnstable supporting means for said leaves, said means being also vertically adjustable to elevate or depress the leaves simultaneously.

3. In a book type-writer, the combination with a suitable base, and the flat platen and track-rails, of book-supportin leaves under* lying the platen and connecte together so as to move in opposite vertical directions, and common supporting means for said leaves supported by the base independently of the leaves and vertically adjustable to elevate or depress the leaves simultaneously.

4. In a book type-Writer, the combination With a suitable base, and the flat laten and track-rails, of rising and falling boo support ing leaves underlying the platen, guiding means for said leaves, a common support member for said leaves vertically adjustable to elevate or depress the leaves SlIIlllllZflIlO ously, and means whereby said member is supported by the base independently of the leaves.

5. In a book type-writer, the combination with a suitable base, and the flat platen and track-rails, of book-supportin leaves underlying the platen and connects together so as to move in opposite directions, guiding members pivoted to-the leaves and base, and supporting means for the leaves distinct from said guiding members. and vertically adjustable to elevate or depress the leaves ennuitaneously.

6. In a book typewriter, the combination witha suitable base, and the fiat platen and track-rails, of book-su porting leaves underlying'the platen, a melting member connect- Furthermore, I may, if deing said learns and ivotnlly Supported intermediate its limgth said base nulopendent of the lonvvs, and means for simultaneously elevating or (lvpressing tho loaves. V

7. In a, book type-writer, the combination with a Suitable bnse, and tho flat platen and track-rails, ol' bimk-sup mrting leaves underlying tho plat-on, parallel guiding and supporting arms pivotnel to each leol" and to the base, a rocking member oon muting said. leaves and pivotnlly snppoitml by said base internindi ate its longth, and moans for vorticn-lly shill? ingthe paths of moi?! thereof.

8. In a book type-writor, the combination with the flat platen and track-mils, of? booksupporting loaves underlying the platen rockin member connoztiing said lonvos' and pivotn ly supported intvl'h idiott its length} and means for vertically adjusting sainl liliflh bar. v

9. In n book by pe wfllivr, the oinnbination with the lat pinion and track-mils, of booksup orting leaves underlying tho platen, parallel guirling and nnpporl-ii'ig arms for each leaf, n roolcing member connecting saigl leaves and pivotnlly supported intermediate its length, nml xnvnns for w rtioally adjusting shill moii'ibor. 7

Hi. 1n a. book typo-Writer, the combination with tho llnt pinion nml brook-rails, of booksupporting loaves untlrlying tho platen, a vertically-milnnloblo rocking member non.- nooting hlllll leaves, and a lolerolly-shiftable carriage in which said member is pivotally snpporlwl iniormwl into its longlh.

l l. lln n. bunli lxpv-wril-or, the combination with n, suilnblo bani, nlnl the flat platen and trunk-rails, oi boolc-snpporlin lonv'os underlying: lhv pinion not :nnuntmlsn as to'movo in opposite vertical ilirnotions under the changing: weights of the two HldvS of a supen imposed book, oonnnon supporting means for said leave mxpportod by the base indepvmlenily of the leavek, and menus for vorticolly adjusting and 'mninmining will supporting moans to 'olovnto or (leptons tho eavns sinn:linnoonsly 12. In :1 book Q'pwwritor, the combination with a. suitable base, and the flat plat-en and track-mils, of book-supporting loaves underlying the pinion and mount-ed so as to morn in opposite vertical directions under the changing Weightsof tho two sides of ihe snporimposml book, ii -common support for Eli-id eaves snpportnrl lyy'izho base indoponziently of the leaves, moans: for vertically :uliusting: snid support i-o oh-vote or iloprvfss tho leaves simultaneously, and means for looking tho support at the rlosil'otl olevafion 13. In a, book typo-writonthe combination with the flat platen and track-mils, of rining and falling bmilvsnpporting loaves underlying, the platen, and n oa-nhplate for mliuh ting the height a}; whioh the lenvn oprzgto. '7 v with the ploton'nml track-rails; of book-Sn porting loaves nndonlying the plat-en, a too ing nwmber commuting said leaves, a pivot for said nnmber, and a cam-plate carrying said pivot.

15. In obook typo-writegthe combination with the flat platen and track-mils; of'b'ook snpporiying leaves underlying the laten, a rocking member connecting said eaves a pivot for Sftiil member a, vertically-movable vertical noun-plate carrying said pivot, and ineains for rotating said oanvplaitc.

' X6. in a, book type-writer, the combination with the flat. platen and track-rails, of l look-supp orting leaves underlying the pl aten, n rocking member connecting said loavemo ivot for said member, and two rotatable ad- }usting mmnbot's comprising a cam-plate and an engaging membor, one being mounted 1n fixed hoari11gs.-oml the other for vertical movement and can'ying'said pivot. v

17. In a, book typo-writor the commnw lion with n nnz nmn and the. trackrails, of book-supportin loaves underlying the platen, a rocking mmnllor connecting said leaves, a iivoi; for said member, and two rotalable od- Justing members nomprising a toothed can! plate and an el'lgnging pinion, one being mounted in fixed bmrings and the other for vertical nim'oinonh and mu'ryilw said pivot.

18. In no booli Ly "FD-Wllitl', tie. oombinn tion with the flat platen and track-rails, of book-supporting leaves underlying the platen, a rocking member connecting saigl leaves and having its pivot extending laterally, a verti- (nlly-slotl-oil nuppoiti, and two rotatable adjusting nunnbors vomprising n min-plain and no engagingmember, one being mounted 1n iixocl h'e'in'ings in said support and the other for vertical movement, thvroin, havin the pivot ol the rocking l'l'lelllllfil passing L xerothrongh and within the slot in the sup art.

19; In :1 book ty o-wl'iter, the oomination with tho flat. p aten and tmok raiis, of rising and falling book-supporting, loaves and guiding arms benent beneath the-forward portion of the leaf nml two arms lwnoalih' the rear portion thereof.

2i]v In a, book ty ao-writer tho combine? Lion with the Hat p nton tmil track-mils, of rising mid falling bookaupportin leaves umliq-lying the platen, and upwmix -extonding supportingHing guiding urins; beneath onoh loaf, ono-jiifiilinmiorliotoly beneath the for ard portio loaf and two nuprposed orinsfliono l tin. rear portion t herpof.

21.111" ii Boon 'witezylhe oulnblnfition'witli ligli fi ntnni'uul track-mils, of rising I sing} lipoli supporting loaves 7 Q 31 ioigrs'l ort spondm'd de igforwhfd portion of each nnglanl dopo'iul'ing from the rear iomlingzf 14. In a book typo-writer, thcf'conibination portion 'thiv ofin il iii jlo 'nn'pporting and goldingarm pivoted to each short standard, and two parallel su porting and guiding arms pivoted to each ong standard.

22. In a book ty -writer, the combination with, the fiat p aten and track-rails, of rising and fallin book-supporting leaves underlying the p aten, a supporti11g-frame, and upwardly. and inwardly extending parallel guiding and supporting arms pivoted at their outer ends to each end of said frame and at their outer ends pivoted to and carrying saidleaves,

23.,Ina book ,ty e-writer, the combination with the flat p aten and track-rails, of rising and fallin book-supporting leaves underlying the aten, a rocking member connecting said lliayes, and upward-extending parallel sup r'ting and guiding arms beneath each leai one arm immediately beneath the forward portion of the leaf and two superposedarms beneath the rear portion thereof,

24. In a book ,ty ewriter, the combination withthaflat p aten and track-rails, of

rising and fallin book-supporting leaves underlyingthe platen, a laterally-shiftable support, arockin member connectin said leaves and pivote to the middle of sai support, and upwardly and inwardly extendin parallel supportin and guiding arms pivote to each end of said support and carrying the leaves.

25, In a book t e-writer, the combina tion ofa table, a p aten mounted at a distance above, the table, a track-frame lying above theplaten and swinging u ward indcpendently thereoflthe traoks o the frame extending sulliciently'beyond their hinged or fulcr'un' ed'poirit 'to afford a rest region in rear thereof, and adownward-acting writing mechanism carried by'the frame and movable-longitudinally and laterally thereover and positionable on said rest region to overbalance the forward region of the frame.

26. In a book: type-writer, thegcombination with a book-support, consisting of vertically-movable leaves, standards thereon, pivotally-rriounted supporting-arms ivoted to said standards, the arms for each eaf being-in parallel disposition and inclined u wardpand a rocking plate connecting t 'e leaves for simultaneous movement, of a platen, and means for st porting the same, substantiall "as described? 2 7. In a 00k type-writer, the combinat on with a book-support, consisting of vertrcally'rnovable leaves; standards thereon, thedstandards being sustained-by parallel -supp"o'rting-arms, there bein a single arm at the of se n 'leaf and two at the rear, the arms being so disposed as- -to maintain the leaves 1n orizontal-planqof a platen and means forsupportin'g thesame, substantially as described. P

28. Ina booktype writer, the combination with a book-support, consisting of vertically-n1ovable leaves, standards thereon, pivotallyqnounted supporting-arms pivotally secured to said standards, the support ing-arms for the two leaves being unconnested and so adjusted as to maintain the leaves in a horizontal plane, connecting standards on the opposing leaves, a rocking plate, means for actuating the rocking plate and maintaining the same in any desired position, of a platen, and means for supporting the same, substantially described.

29. In a book type-Writer, the combination with a book-support, consisting of vertically-movable leaves, standards thereon, pivotally-moun ted supporting arms pivotally secured to said standards, a rockin plate connecting standards on the opposed eaves, a cam-plate and pinion operating ,in conjunction with the rocking plate to position elevate or depress the yielding leaves, of a platen, and means for supporting the same,

substantially as described.

, 30. In a book type-writer, the combination with a booksupport, consistingof leaves, vertically-movable standards thereon, pivotally-mountod supporting-arms pivot-. ally secured to said standards, arocking plate connecting standards on the opposite eaves,

a oam-plate and pinion operating in conjunc-.

tion with the rocking plate to position elevate or depress the yielding leaves, means for maintaining the cam-plate and pinion in the desired adjusted position, of a platen, and means for supporting the same, substantially as described.

31. In a book type-writer, the combination with a book-support, consisting of vertically-movable leaves, standards thereon, pivotally-mounted supporting arms pivotally secured to said standards, the arms carrying means for locking them in any desired osition, a rockin plate connecting stander on the opposed eaves, a cam-plate and pinion operatlng in conjunction with the rocking plate to position elevate or depress the yielding leaves, means for maintaining the camplate and pinion in the desired adjusted position, of a platen, and means for supporting the same, substantially as described.

32. In a book type-Writer, the combination with a book-support, oonsistin of leaves movingly and yieldingly dispose and carried by standards sustained by arms, a rocking plate connecting the standards, camplates and pinions operating in conjunction with the rocking plate to position the yielding leaves to operate to effect locking of the parts, of a platen, and means for supporting the same, substantially as described.

In a book type-writer, the combination with a book-su port consistin of leaves movingly and yiel lngly dispose and carried by standards sustained by arms, a rocking plate, cam-plates and. pinions operating in conjunction with the rocking plate to position the yielding leaves, retaining devices op-' erating upon the sustaining-arms for maintaining and looking the leaves in position,' when edjustecl, of a platen, and means for sup orting the same, substantially as descri ed. 1

34. In a book type-writer, the combinetion of a book-su (port consisting of leaves movingly and yie ingly disposed and carried by front and real standards sustained by arms, the front standards bei shorter than those at the rear, and mechanism for reisinfl' and lowering the standards consisting 0% cam-plates and pinions, a rocking plate connecting with the censplates and pinions, of a platen and means for sustaining the same, substantially as described.

35. In a book type-Writer, the combina tion of e book-so poit consisting of leaves movingly and yiel ingly disposecland carried by front and rear standards, a pair of parallel arms sustaining each rear standard, and a single arm for sustaining each of the front standards, of a platen and means {or sup portin the same, substantially as described.

36. n a. typo-writer, the combination of a table, a platen mounted at a fixed distance above the table, a horizontally shifteble book-support com rising op )ositely-moving rising an falling eaves, an means for adjusting the elevation of the Wholebook-support in order to permit free horizontal movement of the support beneath the platen.

37. .In a. t e-writer the flat platen in combination with the pivoted pap'er-confinin franie, and the writing mechanism arrangea to traverse and pass beyond the pivot for the purpose of automatically elevating the forward end of the frame.

38. In a book-type-Write1', the combine"- tion with an adjustable book-support, of

overlying one-piece track-rails pivoted hiter mediate their length to present a forward work region and a rear region capable of re-- oeiving an im osed traveling Writing mechanisrn to fee 'tate the tilting of the trackrails away from the book-support.

V 39. In a book type-writer, the combinetion with onepiece track-rails pivoted. intermediote their length to present'front and rear machine-supporting regions, and :1 treveling machine capable of occilpying either region; of an adqustable book-support underlyin the front track region' 40. n a book type-Titer, the combination with one-piece track rails pivoted intermediate their length to present front end rear machine-supporting regions, engi a traveling machine capable of occupying either region to assist in positioning the traokrails; of an adjustable book-support underlying the front track region and inolnding rising and falling leevesatlapted to receive books of verying'thickness.

11. In a book type-writer, the combina tion with an adjustable boobsnpport, of overlying one-piece track-rails pivoted intermediate their length to'present front and rear machine-supporting regions, a travelin machine capable of occupying the rear trach region to facilitate tilting of the track-rails away from the book-support, and a log-kjor securing the rails in position above the booksuppo'rt.

42. In a book type-writer, the combine tion with a tiltable fist platen, one'pieee track-rails at either side, and free of said platen and ivotecl intermediate their length to present rent and rear machine-supporting re ions, and an adjustable book-support underlying said platen and rails; of means for looking the platen in position over the book snpport, and distinct means for looking the rails in operative position.

425'. In a type-writer, the combination with one-piece track-rails pivoted intermediate their length to present front and rear inaohine-snpporting regions, and a travel ng machine capable of occu ying either region to assist in positioning tie trash-rails, of a look for securing the rails in horizontal position against the counterbslenoing action of the machine. Y V g In testimony whereof I aliin my signature in the presence of two subscribing witnesses.

. GEORGE W. DONNING. I Witnesses:

ROBERT GRANT,

FRANK Women. 

